Car-brake



2 Sheets-'Sheet 1.

(No Model.)

J. MBIER.

GAR BRAKE. No. 310,067. Patented Dec. so, 1884.

2 Sheets-Sheet 2. J. MEIER.

CAR BRAKE.

(No Model.)

Patented Deo. 30, 1884.

y M Inv/n ryl fosph .Jie/07 N. PEtERa Fimo-ummm wnhmglm u. c.

NiTnD STATES PATENT Frio-n.

JOSEPH h'IEIER, OF NE\VARK, NE\V JERSEY.

CAR-BRAKE.

SPECIFICATION forming part of Letters Patent No.310,067, dated December 30, 1884. Application ledApril 17, 1894. (No model.)

To all zij/'mnt it may concern' Be it known that I, JOSEPH METER, a, citizen of the United States, residing at Newark, in the county of Essex and State of New J ersey, have invented certain new and useful Improvements in Car-Brakes 5 and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use t-he same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

rIhe object of this invention is to reducethe costof repairing railway or tramway cars by removing the i'rictional contact and wear of the brake-shoe from the wheels thereof, and to provide asiniple and effective device for braking or stopping the revolution of the said wheels.

The invention consists in thev arrangements and combinations of parts substantially as will be hereinafter set forth, and finally embodied in the several clauses of the claims.

Referring to the accompanying drawings, in

which similar letters of reference indicatelike' parts in each of the several figures, Figure l is an elevation indicating the relation of my improvements to a rail or tram way car and the wheels thereof. Fig. 2 is a view taken through line .fr of Fig. 1, showing half-sections of the improved brake and their mode of operation. Fig. 3 illustrates the mode of keying certain conical sections on the axle. Fig. 4L illustrates a mode of bolting or uniting certain half-sections ofthe brake portions together. Fig. 5 illustrates a certain modification in the construction of the said sections. Fig. 6 illustrates one mode of operating the brakes, and Fig. 7 is a vertical section showing the brakeoperating mechanism more fully.

In carrying out the invention I form or secure to, upon, or around the car-wheel axle or journal a a conical section orsections, b b, providing frictional surfaces. Said sections are made in half-sections, as shown more clearly in Figs. l and 2, and are bolted on in any suitable manner so that they will remain together. Said half-sections may thus be readily detached from the axle when worn or broken without disturbing the wheel. The bolts are lettered c. Said boltsmay be arranged in ears (l of said sections, which ears are formed tolie below the line ot' the inclined frictional surface, so as not to interfere with a proper contact. To prevent the sections b from turning` on the axle when they are not integral therewith, I provide feathers, &c., which project from the said axle into suitable recesses in the sections, as shown in Fig. 3.

Sliding upon the axle a is arranged a section, f, having a chamber therein, which is formed to taper in correspondence with the conical sectiomb. Said section]` i's also formed of separable half-sections, adapted, by having perforated ears y, to be bolted together by bolts h in any suitable manner, the preferred mode being to provide springs fi, and arrange them between the ears and the heads of the bolts, as shown in Fig. 1, so that when the frictional surfaces of the sections come into contact in braking the wheels the force or jar of such contact will be broken, and the parts will be prevented from so binding as'to prevent the retractile springs from acting. By moving the sliding sections laterally the inclined surfaces make a contact, and sufficient friction is produced to stop the motion of the journal or axle and the wheel revolving therewith. The frictional sections are normally held separate by springs l m, and are forced into holding contact by any suitable system of levers or other appropriate mechanism. The preferred arrangement, however, is shown in Fig. 6, in which n is a center rod suspended from or secured to the bottom of the car or other support by brackets or hangers o, and operated by the usual brake-crank or wheel-bar p, to which it is connected, preferably by a coilspring, q. By winding .up said spring or other connective, and moving the center bar or rod longitudinally, the arms r, uniting the brake sections with the said bar, are caused to spread and throw the said sections into frictional contact, as will be understood. lVhen power is remov ed from the brake-bar, the coil-spring nnwinds, and the spring orsprings lm act to move the center bar backward and to separate the frictional surfaces.

To hold the sliding hal f-sections in proper relation to one another, I provide dowels or tongues s on one section and corresponding relOO cesses or grooves in the other. These unite in holding the said sections together, but allow the saine to separate sufficiently when a contact is made.

I may form the sliding section of hinged or pivoted parts, as shown in Fig. 5. In this case the bearing of the said sections on the axle is not changed or the paris caused to bind when the Contact of the frictional surfaces is made.

I do notvwish to be understood as limiting myself to the exact form and construction of parts speciiicall y described, as many changes may be made without departing from the spi rit of this invention.

I am aware that, broadly, it is not new to construct brakes of reeiprocally inclined or conical sections, one of which moves laterally to and from engagement with the other, and this feature I disclaim 5 but heretofore one of said sections has been `cast with the wheel, so that the tendency of the laterally-sliding cooperati ng secti on was to throw said wheel along the axle. In my invention this objection is overcome, the inner conical section being upon the axleindependent ofthe wheel, so that the co-operating section cannot affect the said wheel.

I am also aware that friction-wheels of a different constructiou have been secured to the axle in sections; but in this ease no inclined surfaces were provided, noralaterally-sliding co-operating section to engage the same.

Having thus described the invention,what I claim as new isl. In combination, in a ear-brake, thehalfsections ff, bolted together around the earaxle, the bolts h, and springs fz), all said parts being arranged and operating substantially as and for the purposes setforth and shown.

2. In combination with the railway or tramway ear axle, the conical section b, and co-operating sections f, and rctraetile springs, all said parts being arranged and operating substantially as set forth.

3. In combination, the traction-wheel axle, conical section, co-operating section, retractile spring or springs, center bar, arms connecting said bar to the said co-operating seetions, the coil-spring, andbrakebar, all said parts being arranged and operating substantially as herein set forth.

4:. The sliding half-sections having dou-els or tongues s in one and corresponding reeesses or grooves iu the other to hold the said sections scparably together, said half-sections being in combination with the ear-axle and eooperating frietional sections, as set forth.

lhe combination, with the car-axle, conical half-sections secured thereon and together, and reeiprocally -inclined half-sections con4 nected together and engaging with said sec tions on said axle, all substantially as and for the purposes set forth.

In testimony that I claim the foregoing l have hereunto set in v hand this 4th day ol' OLIVER BRAKE, F. F. CAMPBELL 

